WAEC Chemistry 2022 Objective — Question 1
Question 1 of 50 from the West African Examinations Council (WAEC) Chemistry 2022 Objective paper, with the correct answer and a full explanation.
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The by-product of fermentation of sugar is
- A. carbon (IV) oxideCorrect
- B. ethanoic acid
- C. propanol
- D. propan-1,2,3-triol
Explanation
Fermentation of sugar (glucose) produces ethanol and carbon (IV) oxide (CO2) as a by-product: C6H12O6 → 2C2H5OH + 2CO2.
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